The purpose of this study is to test and refine, a subject questionnaire aimed to be used in a general population rosacea prevalence study.

The study will test the subject questionnaire aimed to be used in a full general population prevalence study to screen potential subjects with rosacea.

Questionnaire will be self-administrated to Dermatology outpatients.

Testing will be performed at the practice of 2 Dermatologists experts in rosacea who will evaluate subjects' answers and propose fine-tuning of the questionnaire content, if needed.

• Male or Female aged between 18 (or locally accepted majority) and 65 years old both included.
• Subject visiting one of the study dermatology practices for daily care/routine dermatology consultation.
• Subject have to read and sign the approved Informed Consent form prior to any participation in the study,
• Subject willing and capable of cooperating to the extend and degree required by the protocol

Rosacea and non-rosacea patients